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Ann Thorac Surg 1997;64:1495-1498
© 1997 The Society of Thoracic Surgeons

How To Do It

Technique for Complete Subcoronary Implantation of the Medtronic Freestyle Porcine Bioprosthesis

Albert H. Krause, Jr, MD

Department of Cardiac Surgery, Legacy Portland Hospitals, Portland, Oregon, and Southwest Washington Medical Center, Vancouver, Washington

Accepted for publication June 2, 1997.

Nonstented porcine bioprostheses offer the surgeon a larger implant option with better hemodynamics than stented counterparts by eliminating the space occupied by the frame. A secondary benefit may be improved durability related to reduction of leaflet stresses created by the frame. The Medtronic Freestyle stentless porcine aortic root can be implanted as a root replacement, as a miniroot cylinder within the aorta, or as a partially or completely scalloped valve replacement. This report describes an easy, reliable, and reproducible technique of completely scalloped valve replacement performed in a population of 75 patients with Freestyle implants and uses the anatomy of the Freestyle and human aortic roots to facilitate the implant technique.


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